APA (7th ed.) Citation

Cooper, P. (2007). Beginning Ruby: From Novice to Professional. Apress.

Chicago Style (17th ed.) Citation

Cooper, Peter. Beginning Ruby: From Novice to Professional. Berkeley, CA: Apress, 2007.

MLA (8th ed.) Citation

Cooper, Peter. Beginning Ruby: From Novice to Professional. Apress, 2007.

Warning: These citations may not always be 100% accurate.